NTSB Identification: FTW83LA369.
The docket is stored on NTSB microfiche number 23383.
Accident occurred Thursday, August 04, 1983 in GRAND ISLE BLK
Aircraft: BELL 206B, registration: N39114
Injuries: 1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

WHILE FLARING TO LAND ON AN OFF-SHORE PLATFORM, THE PLT NOTED A SUDDEN VIBRATION. HE CONTINUED THE LANDING; HOWEVER, BY THE TIME THE HELICOPTER TOUCHED DOWN, THE VIBRATION BECAME SEVERE & THE ACFT TURNED TO THE RIGHT. AN EXAM REVEALED THAT A MIDSPAN BALANCE WEIGHT HAD SEPARATED FROM A MAIN ROTOR BLADE, PN 206-010-200-33. WHILE REACTING TO THE EMERGENCY, THE BOTTOM VERTICAL FIN CONTACTED THE EDGE OF THE PLATFORM.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ROTOR SYSTEM,MAIN ROTOR BLADE..FAILURE,PARTIAL

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

DIVERTED ATTENTION..PILOT IN COMMAND

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